- Author: Joachim T. Baer
- Language: English
- Year: 1972
- Author: P. A. Lavrov (editor), C. H. Von Schooneveld (editor)
- Language: Русский
- Year: 1966
- Author: Karl D. Kramer
- Language: English
- Year: 1970
- Author: Michail Petrovi Pogodin
- Language: German
- Year: 1971
- Author: Jan van der Eng (editor), Monéir Grygar (editor)
- Language: English
- Year: 1973
- Author: Barbara Heldt Monter
- Language: English
- Year: 1972
- Author: Michael S. Flier (editor)
- Language: English
- Year: 1974
- Author: Glynn Barratt
- Language: English
- Year: 1976
- Author: Samuel David Cioran
- Language: English
- Year: 1973
